Slider



June 6, 1939. w BEHRENS 2,160,819

SLIDER Filed Dec. 16, 1937 E 16 D D 23 v 1' Z5 Z5 Z5 aIII,I III I "I" "jF IIIIIIIIIIIIII F J 7 v 20 .17 Fig 6 Fig: '7 I INVENTOR.

wali'er a. rafiebrens A ATTORN Y.

Patented June 6, 1939 UNITED STATES SLmER Walter A. Behrens, New York,N. Y., assignor to -Ideal Fastener Corporation, Brooklyn, N. Y., a

corporation of New York Application December 16, 1937, Serial No.180,220 3 Claims. (01. 24-205) This invention relates to improvements insliders, for slide fastener assemblies incorporating fastener elementsor scoops mounted in offset relation with respect to the tapes.

Broadly, it is an object of this invention to provide a slider of suchconstruction as to provide for the accommodation at the lead entrancethereof of fastener elements mounted angularly with respect to the tapeand to progressively guide 10 and direct the fastener elements flexiblymounted on the tape to the normal plane of the tape, at which" time theseries of fastener elements on opposing tapes being directed in a commonplane, may be interlocked by and within the slider.

15 Specifically, it is an object of this invention to provide a sliderhaving spaced opposing wings united at one end to form a channelformation, having diverging arms, which are in a central transverseplane angular to that of the body of the channel and to each other, thecontour of the leading end of the diverging arms being such as toaccommodate the scoops in their normal angular position on the tapes,the diverging arms as they lead towards the body of the channel being ofgradually decreasing angularity with respect to the plane of the latter,whereby upon reciprocation of the slider the scoops are respectivelyprogressively displaced from angular to horizontal position forinterlocking and from horizontal in- ?o terlocking position to theirnormal angular position on the tapes upon separation.

These and other advantages, capabilities and features of the inventionwill appear from the subjoined detailed description of one specific em-:3 bodiment thereof illustrated in the accompanying drawing, in whichFigure 1 is a perspective view of a slide fastener assemblyincorporating the slider forming the subject matter of this invention.

40 Figure 2 is a front elevation partially in section taken alonglines-2--2 of Figure 1,

Figure 3 is a front elevation partially in section taken along lines 3-3of Figure 1.

Figure 4 is a perspective view showing-the con- 45 struction of theslider.

Figure 5 is a perspective view of the "leading section-of the slider.

Figure 6 is a front elevation in section taken along lines 6--6 ofFigure 4. 50 Figure '7 is a front elevation in section taken along lines1-'l of Figure 4.

Referring to the reference characters in the drawing, numeral l0represents a slider operating by reciprocation to interlock and separateco- 55 operating flexible stringers Ila and llb. As

shown in Figures 1 to 3 inclusive, the stringers Ho and llb eachcomprise flexible tapes I21; and lZb, the central transverse plane ofwhich for the purpose of this illustrative embodiment. of the inventionis horizontal, and upon the flexible 5 beads l3a and 13b of which thereare mounted the unsymmetrical type scoops Ma and Nb, which by theirnature and formation are angularly disposed and have their centraltransverse plane angularly disposed with respect to the horizontal l0central transverse plane of the tapes.

As indicated generally in Figure l, and specifically in Figures 2 and 3,the tapes i211 and I2!) of the stringers II are at all times in thehorizontal plane, while the scoops I3o and I3b at the left of 15 Figurel, and in Figure 2, are shown as angularly disposed with respect to thecentral transverse plane .of the tapes, prior to interlocking thereof,while, as shown at the right of Figure 1 and in Figure 3, the scoops asinterlocked are disposed so 2 that their central transverse plane isparallel to that of the tapes, which latter condition is necessary inorder to bring about proper interlocking of the stringers Ila and Nb.

To bring about the necessary transposition of the scoops on thestringers l I from the normal to the interlocking condition, there isapplied the slider formation, the construction of which is shown indetail in Figures 4: to 7 inclusive.

The slider [0 comprises of a structure having an opposing wings I6 andI1 forming top and bottom elements connected at one end by a separatorpost [8 and having a substantially V-notched wall formation We and H31)to define diverging channels 19a, and Nb, merging into a single channel35 20, there being mounted'adjacent the separator post a handle 2|,extending above wing it, and upon which handle there is carried tab 22(see Figure 1) for permitting reciprocation of the slider ID tointerlock and separate the stringers. 40,

The lower wing H has a side wall formation 23 to substantiallyaccommodate the vertical dimensions of the scoops Ma and Nb, while wingIt is flat through a greater portion of its length and of slightly lesswidth than wing I1.

As shown in perspective view of Figure 4, indicating the leading end ofthe slider, the opposing portions A and B of the wings l6 and H areshaped to provide angular diverging channel formations I9a. and Nbcorresponding to and symmetrical with the normal angular positioning ofthe scoops I24: and l2b, as mounted on the tapes and shown in Figure 2.These channel formations, as they progress towards the merging point inadvance of the apex of the V-notch of the separator post, graduallydecrease'in angularity, as shown in their relation to the opposingportions C and D, which are at the merging point (see Figure 6),eventually attaining a horizontal plane of the opposing portions E andF, as shown in Figure '7, which last named view indicates the section ofthe single channel 20.

As can be observed from the detail shown in Figures 4 to 7, the opposingportions A, C and E on the upper wing, and B, D and F on the lower wingare shaped to define respectively cooperating sections, the centraltransverse plane of which gradually decreases from that of an extremeangle with respect to a horizontal central transverse plane to that ofparallelism to such plane, and in which horizontal transverse centralplane interlocking of the stringer is desired and carried out.

In Figure 1, there has been graphically shown the displacement impartedto the scoops carried on the stringers in their passage towardsinterlocking or separation, and the three views, 5 to 7 inclusive,graphically indicate the contours of the channel formation which thescoops encounter as the slider in its reciprocation acts upon saidscoops to permit passage thereof through the slider; the gradualdisplacement of the scoops from their normal transverse central planeangular to that of the tapes and the reverse thereof being capable ofaccomplishment due to the flexible mounting of the spaced scoops on theflexible tape and flexible bead carrying the same.

It is obvious that various changes and modifications may be made to thedetails of construction without departing from the general spirit of theinvention as set forth in the appended claims.

I.claim: 1

1. In combination with flexible interlocking stringers, incorporatingscoops normally mounted in a central transverse plane angular to that ofthe tapes carrying the same, a slider comprising a body portion havingdiverging channeled arms merging into a channeled stem through which thescoops of the stringer series pass for interlocking and separation uponreciprocation of said slider, the diverging arms and stem havingdifferent transverse central planes, the stem having a centraltransverse plane parallel to that of the tapes and the diverging armshaving a central transverse plane of decreasing angularity with respectto that of the stem as the diverging arms lead to the stem, the leadingend of the diverging arms having the same central transverse plane asthat of the opposing scoops on the stringer series in their normalmounting.

2. In combination with flexible interlocking stringers, incorporatingscoops normally angularly mounted with respect to the central transverseplane of the tapes carrying the same, a slider comprising spaced wingsinterconnected at the leading end to form diverging channels merginginto-a single channel, the single channel having its central transverseplane parallel to that of the tapes, and the diverging channels havingcentral transverse planes angular with respect to each other and to thatof the single channel, the leading end of the diverging channelshaving'the same central transverse plane as that of the scoops in theirnormal mounting on the tapes, the diverging channels along their lengthleading to the single channel having a central transverse plane ofdecreasing angularity with respect to the single channel, whereby uponmovement of the slider, the scoops of the respective stringer seriesentering the diverging channels are displaced from their normal angularmounting with respect to the tapes to a position where their centraltransverse plane is parallel to that of the tapes and the singlechannel, as they progress towards and enter into the single channel forinterlocking.

3. In combination with flexible interlocking stringers incorporatingscoops normally mounted in a central transverse plane angular to that ofthe tapes carrying the same, a slider comprising opposing wingsconnected by a separating post to define diverging guideways merginginto a single guideway for interlocking and separating the scoops of thestringers upon reciprocation of said slider, the leading end of thediverging guideways defined by the wings having the same centraltransverse plane as that of the normal mounting of the scoops 0n thestringers, the central plane of the remaining portions of the divergingguideways being of gradually decreasing angularity with respect to thatof the merging guideway, the portions of the wings defining the mergingguide- Wa'y having a central transverse plane parallel to that of thetapes, whereby the normally angularly disposed scoops on the stringers,upon passage through the diverging guideways, are gradually displacedfrom angular central transverse planes of mounting with respect to thatof the tapes and the merging guideway to parallel centraltransverseplane of interlocking with respect to that of the mergingguideway and tapes.

. WALTER A. BEHRENS.

